99619938 has 24 divisors (see below), whose sum is σ = 235465776. Its totient is φ = 30187800.

The previous prime is 99619937. The next prime is 99619963. The reversal of 99619938 is 83991699.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99619937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251368 + ... + 251763.

It is an arithmetic number, because the mean of its divisors is an integer number (9811074).

Almost surely, 2^99619938 is an apocalyptic number.

99619938 is an abundant number, since it is smaller than the sum of its proper divisors (135845838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99619938 is a wasteful number, since it uses less digits than its factorization.

99619938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503150 (or 503147 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 99619938 is about 9980.9788097160. The cubic root of 99619938 is about 463.5701063124.

The spelling of 99619938 in words is "ninety-nine million, six hundred nineteen thousand, nine hundred thirty-eight".